A Study of Creep and Fatigue Interaction of Annealed Type 316 Stainless Steel Under Multiaxial Nonproportional Loading

摘要

In this paper,an unified viscoplastic model was utilised to numerically simulate cyclic hardening of the annealed type 316 stainless steel under multiaxial non-proportional cyclic stressing at elevated temperature.Description of the constitutive model and interpretation of material parameter were also presented.The material parameters were obtained from the uniaxial tests.Constitutive simulations for the circular and square cycling stress paths in the axial-torsional plane have been verified by the test results,and the possibility of this model extension was also discussed.